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GeForce 825M vs GeForce GT 130

Intro

The GeForce 825M features core speeds of 850 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 memory. It features 384 SPUs along with 16 Texture Address Units and 8 ROPs.

Compare that to the GeForce GT 130, which has a core clock speed of 500 MHz and a DDR2 memory speed of 250 MHz. It also makes use of a 192-bit memory bus, and makes use of a 55 nm design. It is made up of 48 SPUs, 24 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M 33 Watts
GeForce GT 130 75 Watts
Difference: 42 Watts (127%)

Memory Bandwidth

Theoretically speaking, the GeForce 825M will be 20% quicker than the GeForce GT 130 overall, due to its greater bandwidth. (explain)

GeForce 825M 14400 MB/sec
GeForce GT 130 12000 MB/sec
Difference: 2400 (20%)

Texel Rate

The GeForce 825M should be a bit (approximately 13%) faster with regards to AF than the GeForce GT 130. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce GT 130 12000 Mtexels/sec
Difference: 1600 (13%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 130 is a better choice, but not by far. (explain)

GeForce GT 130 8000 Mpixels/sec
GeForce 825M 6800 Mpixels/sec
Difference: 1200 (18%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 825M

Amazon.com

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GeForce GT 130

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 825M GeForce GT 130
Manufacturer nVidia nVidia
Year January 27 2014 March 10, 2009
Code Name GK208 G94b
Memory 2048 MB 768 MB
Core Speed 850 MHz 500 MHz
Memory Speed 1800 MHz 500 MHz
Power (Max TDP) 33 watts 75 watts
Bandwidth 14400 MB/sec 12000 MB/sec
Texel Rate 13600 Mtexels/sec 12000 Mtexels/sec
Pixel Rate 6800 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 384 48
Texture Mapping Units 16 24
Render Output Units 8 16
Bus Type DDR3 DDR2
Bus Width 64-bit 192-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 505 million
Bus PCIe 3.0 x8 PCIe x16 2.0
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 825M

Amazon.com

Check prices at:

GeForce GT 130

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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